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Finding the Fourth Proportional to 156,219.56, 215,583.16 and 84,599.68

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Solution

The fourth proportional to 156,219.56, 215,583.16 and 84,599.68 is: 116,747.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,219.56 : 215,583.16 = 84,599.68 : x
  2. Step 2: Convert to fraction form
    156,219.56/215,583.16 = 84,599.68/x
  3. Step 3: Cross multiply
    156,219.56x = 215,583.16 × 84,599.68
  4. Step 4: Simplify right side
    156,219.56x = 18,238,266,349.39
  5. Step 5: Solve for x
    x = 18,238,266,349.39/156,219.56
  6. Step 6: Final answer
    x = 116,747.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.